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綦育仕,汪彦博,杜兰君,费岩晗,杜之明.SiC泡沫陶瓷增强ZL205A铝合金复合材料的制备与性能研究[J].稀有金属材料与工程(英文),2020,49(11):3741~3747.[Qi Yushi,Wang Yanbo,Du Lanjun,Fei Yanhan and Du Zhiming.Preparation and mechanical properties of ZL205A alloy-infiltrated SiC foam ceramic composites[J].Rare Metal Materials and Engineering,2020,49(11):3741~3747.]
Preparation and mechanical properties of ZL205A alloy-infiltrated SiC foam ceramic composites
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Received:October 30, 2019  Revised:December 09, 2019
DOI:
Key words: SiC foam ceramic  ZL205A alloy  extrusion infiltration process
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Qi Yushi,Wang Yanbo,Du Lanjun,Fei Yanhan and Du Zhiming  
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Abstract:
      ZL205A alloy-infiltrated SiC foam ceramic composites are prepared through extrusion infiltration process. The effect of different porosity of SiC foam ceramic on the properties of composites is investigated. The SiC foam ceramics are tightly combined with the ZL205A matrix material, and there are few cracks and other defects can be observed. The SiC foam ceramic as the reinforcing phase refines the grains of the ZL205A matrix phase. The pore structure and the grain size are finer and smaller with decreasing of the reinforcing phase porosity. The mechanical properties of the ZL205A alloy-infiltrated SiC foam ceramic composites are investigated. The hardness and flexural strength of the composites are 127.6HV and 415MPa, respectively. The wear resistance of the composites is also investigated, the results demonstrate that the addition of ceramic reinforcing phase can effectively transform the severe adhesive wear and spalling wear of the matrix phase into lighter abrasive wear, which greatly improves the friction and wear properties of the composite.